| 摘要 |
A carburetor of the type having a first main air passage with a venturi and throttle valve located therein is provided with second and third auxilliary air passages each of which are connected to the first main air passage upstream of the venturi. A second auxilliary air passage is adapted to be connected to the intake manifold of the engine and a first solenoid control valve is located in the second auxilliary air passage to control the flow of air therethrough. The first fuel passage is connected between a fuel supply chamber and the venturi of the first main air passage, the third auxilliary air passage may be connected directly to the first fuel passage or to an auxialliary fuel passage which is connected between the first fuel passage and a venturi located in the second auxilliary air passage. A solenoid control device is located in the third auxilliary air passage to control the flow of air to either fuel passage. The third auxilliary air passage may also be connected to the first fuel passage at a point intermediate the fuel supply chamber and the point of connection between the first fuel passage and the second auxilliary fuel passage to supply air to both fuel passages simultaneously. The two solenoid control valves may receive signals from the microcomputer which in turn may receive signals from various sensors indicative of engine operating conditions.
|
